usign: Activate LTO compile option
This decreases the size of the usign application by 16% on MIPS BE.
old:
24,597 /usr/bin/usign
new:
20,501 /usr/bin/usign
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
(cherry picked from commit 6ffd8a8f92)
			
			
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		| @@ -30,6 +30,9 @@ define Package/usign | |||||||
|   TITLE:=OpenWrt signature verification utility |   TITLE:=OpenWrt signature verification utility | ||||||
| endef | endef | ||||||
|  |  | ||||||
|  | TARGET_CFLAGS += -flto | ||||||
|  | TARGET_LDFLAGS += -flto=jobserver | ||||||
|  |  | ||||||
| CMAKE_OPTIONS += \ | CMAKE_OPTIONS += \ | ||||||
| 	-DUSE_LIBUBOX=on | 	-DUSE_LIBUBOX=on | ||||||
|  |  | ||||||
|   | |||||||
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